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Theorem in-def
⊦ char ∈ str ↔ char ∈ s→l(str)
Type: An axiom
Validity: The proof is valid.
Features:
Comment:
Used by:
char-in-01
,
char-in-app
,
char-in-empty
,
char-in-one
,
char-in-rec
,
natstring-chars
,
Used by units in proved state:
Proof exists?: No